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4: Sheets-Sheet 1.

(No Model.)

G. ENGEL VACUUM PAN." No, 386,579

Patented July 24, 1888.-

Fig.2.

(No Model.) 4 sileets sheet.

G. BNGEL VACUUM PAN. No. 386,579. Fatented. July 24, 1888a 3 n ll /3. ..........v. N...-

(No Model.) 4 Sheets-Sh een 3 G. ENGEL VACUUM PAN;

No. 3863 Patented July 24, 1888 QQmA q-M @M (I/f6 (No Model.) 4 Shank-Sheet 4.

G. ENG-EL VACUUM PAN. No. 386,579 Patanted July 24, 1888.

llnrrhn fa rness l nrsnrr Geri nofrnrnino Eileen, snoofrmn, rosn, .ASSl-GNOR ro nnnnr ENG-EL, OFESAM'E Pi -non,

encounter-ire.

Si'ECIPIGA'I'ION forming partof Letters Parent No. 386,579, dated duty 24-, 1 388;

Application filed November 10, 1887. Serial No. 254.7%. (N0 modcln To all whom, it may concern.-

Be it known that I, GOT'IFRIED ENGEL, of Brooklyn, in the county of Kings and State of B ew York, have invented certain new and use- 5 inl Improvements in thorium-Pens; and I do hereby declare that the following is a. full and exact description thereof, reference being had to the accompanying drawings, and to the let ters of reference marked thereon, making-o to pert of this specification, in which- Figure l is an elevation of a vacuum-pen titted with my improvements; Fig. 2, e. vertical central section thereof in line woof Fig. 3; Fig. 3,, a transverse section thereof in line 3 y of Fig. 2; Fig. 4, a detached Ttreiisverse sec tion, on an enlarged scale, in lin v z (if-Fig. 2, illustrating the form of the-hends'to which the heating-tubes are secured: Fig. 5, o

tacheu transverse section, on iln'eulttrged Si in, in line a a of Fig. 4; Fig. that section inane b b of Fig. 5, showing the end of the-bolt in elevation; Fig. 7, a transverse vertical-section, on an enlarged scale, through Wool thesnpcr imposed tiers in a section of the 'hentingtuhcs and their tie-pieces and stay-s'leeves'in .ne c c of Fig. 8, said, Fig. 8 being a horizontal sec tion in line d d ofFig. 7;-Fig. 9, nnel notion, on an enlergcdscnlc, of one of ti port-hole doors and its eyeglass, Fig. 10 h n trans verse section thereof in line 0 e err 2g. 9. Fig. Iii. is a transverse section similar to ig. 3, illustrating n modification in the arrangement of the inlets and outlets in a section of heat ing-tubcs, the tie-plates and supports for the section in liueff of Fig. 11, enough of the pan chi y oei in; shown to present -four steam-heads. Similar letters indicate like'pnrts innll of the figures.

lrlyinvention has-Jon its object to simplify and improve the coast!" ction and arrangement of the hatilng-snr ace contained in a recn'nnrpen for the nnmufncture of sugar, *3 menus are provided for producing us degrees of temperature in different one or on (liilcrcnt, sides of the path to proc circulation therein, the amount of in it given spnccis largely iny incrcnsing correspondingly on in thcpnn, the dnwn'wnwl lllllfil, :i iron exponu. i... t.

. sugar the tubes he. 1;; omitted; and 12 is a transverse sion and contraction of the heating-pipes per-- mitted without nfi'ecting thejoinis, and said joints made fast by bolts, which are not exposed to the action of the contents of the pan.

It has also for its object to facilitate ready access to each of the pipes and to provide form and construction and licfinounted and connected in the customarymanner.

The pen is heated ns r'cqui red by menus. of 'iniflependent sectional segmental radiators, each radiator consisting of two radial heads,

and A connected on one side only by a se ries of curred robes bent-to form arcsof. iii

ferent radii, and which are arranged concentrically 'at uniform distances apart and in e.

plane deviating suliiciently from the hori; men plane embracing the two heads to allow an automatic drainage therefrom of the water of condensation therein. I

3 Vecuunrpnns have heretofore been fitted with radiators constructed of two liltllill hendn placed diametrically opposite cnchothcr and connected on both sidesby curved scn'iicircu- 1211' or segmental tubes connnuniccting freely with each other through said interposed heads so as to form in fact a series of circular pns sages intersected by the two redial channels formed by the heads. My invention differs therefrom in that my radiators are segmental, and the two redial heads in which the tubes for enchrndint'or terminate are fitted withbut.

one set of lateral tubes, which communicate with the respective heads on one side thereof only, whereby there are no circulnr 'ntss .S

created therein; The arcs formed by the sovieral tubes 3 3 Sin each radiator nrc describe-:1 from a common centernso that the open intervals between themnre uniform in width throughout their entire length. A suflicicnt number of thcse indcpcndcnt segmental rndiw tors are titted-in the some horizontal plane to form n i'ngic tier, iilling the entire circle. In it is preferable to use semicircular I isshown in Fig. 3; but I contemplate making them qundrnntnl or of lesser lCi mental forms, thereby increasing the number required to complete any one tier thereof. By

, making thesegniental radiators independent of each other and with tubes of small diame-.

ter, I am enabled to regulate the heating of thepan with great precision, and am also onabled to admit steam into the radiators on-one side of the pan at a higher temperature-than niplbn the other, so as to force the circulation in the pan when required.

The radiating-tubes 3 3 3 may expanded "in the respective openings provided for them,

in the heads A A by an expander passed thropgh corresponding openings on the opposite side of the head, which openings will finally be blanked or closed up.'- Irprefer, however, to facilitate the connection and disconnection. of the tubes 3 3 3 with and-from' the heads A A by forminginternallugs, 4 4, at diametrically-opposite pointswithin a head fitted to the end of each tube to engagea T- 'headed bolt, 5,- inserted transversely through the head and into the end of the tube, as

shown in detail in Fig. 5, and by means ofwhich the tube is drawn against the opening in the head towhich it is fitted, to make a close joint therewith. e.

The opening between-the lugs 4 4 is so restricted as to admiteof the passage of the nar .accideutal withdrawal.

row portion only of the T head between them,-

so that afte'rthe headhas been passed through. between them it will, upon being turned at a right angle with said opening, engage the lugs, as shown in Fig. 5, Stops t i are formed respectively on' the upper edge ofone lug and on the lower edge of the opposite lug, to arrest the rotary movementof; the bolt when its headhas been brought to a right angle with the opening between the lugs. A flange or collar, m,'is also formed about the bolt near'to ,its head, to arrest its longitudinal inward movement when its head has passed in ,beyond the nut, 6,'on the outer 'side,as shown in said,

By this device anyone of the tubes 3 may be readily disconnected without disturbing the others by simply removing the nuts 6, and tlicreby freeing the bolt 5 at each end thereof.

The radiators may be, constructed with a single set of concentric radiating tubes, but are preferably constructed with two sets of concentric tubes, one above the other, as shown in Figs. 2, 4, and 12'. Where there are two sets of tubes in a radiatoreach head is divided longitudinally by a horizontal partition, B, into two compartments, as shown in Figs.

- 2' and 4 of the drawings, so that while commuconnecting pipes 3 '3 3 to the opposite head, A,

nication will be established between the ends of all the tubes in one set through their conneotion with the one head there shall be no 7c communication between the tubes in the .sev-

eral sets, but each set will be kept independent of the other.

Each compartment in one of the heads, A, of

each ind epen'dent radiator is fitted at its outer 7 5 end with a valve, 7, and connecting-pipe 8'for asupply of steam thereto, and each m n-npart.--

.mentin the opposite head, :A, of the same ra: diator is provided at its-outer head with an exhaust-opening,"9, which may be made'to comanexhaustpipe is not shown in the drawings.

-Steau'1 admitted to the one head, A, will thus be made to pass equallythrough the curved,

s and thence be discharged;

Instead of'i'orming the exhaustpipe 9 'for each set of tubes in the radiator in the outer end of the second or exhaust head, A, thereof, --I-eontemplate connecting .the innermost tube 9 or tubes of eaehseries withan exhaust-pes- 1 sage, C, formed in t'he firet head, A,'(see Fig.

12,) and cutting oil the remainder of the tubes from'direct connection with said inner tube v in the steam-supply head A by means of a transverse partition, 10, at the inner end of said head, as'shcwn in Figs. 11 and 12.

Different methods ma'y be employed in taking 011'- the exhaust without departing from the t nature of this feature of my invention, which 1 ris to forgn a circulation through the tube-heads A A' and -tnbes'3 nit-irrespective wherethe exhaust or the inletmay be. (1 These independent semicircular or segmental radiators formed of sets of tubes 3 3 3, united 'at their ends to steam-heads A A, are mounted within the vacuum-pan -D in horizontal tiers W W W,

one abovethe other, as-shown in Fig, 2, each tier being made of two or more independent segmental radiators arranged in two horizontal sections, (see Figs. 2 and 12,) suflicient space being left between the several tiers to allow the free passage of amau therei'n for acoessto I each and all of the tubes.

The outer ends of the radial heads A and A of each segmental radiator are supported in suitable bearings againstthe outer wall'of the vacuunipan, and suitable openings are formed for tho connection of the steam and exhaust pipes to said heads by means of prop-- erly-packedjoints, in'the nsualunanner, which need not herein be described. x

The inner end of each -head ;A and Aofeach segnrental radiator is supported by means of two vertical standards, 11 11, Figs. 2, 3, and l2, secured on. each side of the vertical axis of the pan D, to which are bolted a series of scg- 1 mental horizontal brackets, 12 12. (See Fig. 3, These segmental brackets arecach formed in two divisions, E E, (see Figs. 2 and 12,) which are united by transverse bolt-s and are flanged at their ends to fit against the standards 11 11, as shown in Fig. 3. The inner .head ofeach. head A and. A is formed with a.

. munic'atewi'th anexh aust pipe,although such the inner end of each head is fitted and left to rest loosely in the recess in the edge of the tie-pieeesclosely against the ends of this inthe assa e of a man u and GOV lower division of its appropriate bra nt. 12,

and the upper-division. of the bracket is than fitted'in-place upon thelower division and the two bolted together so as to confine the lug between'them and yet permit a free in" nal play thereof in its seat. A... is thus provided for the inner en which will, however, admit of neetion ibrlhe removai, if need i radiatonwithout disturbing the o The interval between therertzc 11 11 is wide enough and the radius of the segmental bracketslZ 12 large eno; close between them a-central space (*5 or vertical passage-way which npport and thereby facilitate access to t spaces between the several tiers diators.

Radial brace and suppo I Fig. 3) are fitted horizon ally to tween the two sets of tubes in each radiator where the radiator is made double, or the one setoftnbes if the radiator single, and are supportedat'their inner ends by the brackets 12 12 and at their outer ends by suit able bearing-plates or brackets secured to the Wall oi'the pan. To prevent any displacement or bending ofthe tubes 33 3 intermediate their ends, they are clamped loosely to the radial bars 14: by ineans'of tie-pieces 1 {see E 3 and 7.) curved to fit over and en Tit-3Q two adjacent tubes, and transvr "(3 bolts 16, each made to pass central!" through tie-piece placed on the-upper set of tubes and a corre sponding tie-piece placed under the lower set of tubes in the radiator, the tie-pieces and the tubes which they clasp being drawn toward each other and bound closely upon the radial bar 14 by means ofa nut, 17', upon the endof the bolt. (See Fig. 7.) To prevent the tubes from being thus bound so' closely as-t'o' interfere with 'their'due expansion and contraction, a sleeve, 18, is slipped over each bolt 16 between the tiepieees 15 15, so as to preserve a proper interval between them, and the nut 17. operates with bolt 16 and head 19 to bind the terposed sleeve.

The removal or insertion of any one of the radiator-tubes 3 3 3 within the vacuum-pan D is facilitated by means of port-holes 19 19, (see Figs. 2 and 10,) formed in the outer wall of the vacuum-pan between each two tiers W \V of the radiators. These portholes 19 are closed by suitable door's, 20, in which are fitted the customary eyeglasses, 21, as shown in Figs. 9

and 10, by whichthe contents ofthe pan are inspected and the level t-hereof determined.

f tions of any kind 'r; i permit or the ready dowim'ard discharge oi t-hcsngar when the pan into be emptied. and promote a free circulation in the pan. At the same time, by reason olthe ui'iilormity of the curves in the pipes and the simplicity of their eounemions, the tubes in each radiator and tier of radiators may be ln'might more closely together and a greater ureanl" heatingsurlhce obtained than in other iorme nl heaters.

'l'l (lispon at he tubes F; 3 5;" elrculi'tr w quazlranini res made in. ends only. in Ponder. he; A A, which are left loose in their bearings their inner ends, permits the utmost l'reedonrior an expansion and ltraction of the several parts without strain whalever upon their joints and prove is breaks or leak in semi at their age from this cause.

i'he arrangement of tubes 3 din independent radiators and the arran enient of said. radiators in double horizontal tiers W -Qwith, open swim between the tiers communicating with an open central shaftbetween the central snpportirig-standsrds, 11 11, permits ol" ready access to any one of the tubes; and lies method of securing; the tubes to the he ds A. A ny means of d: liable bolts 5, as described, permits oi the ready detach out of any one of them independently f the-other, while the porthohas iii in the side of the pan provide meansifor an easy withdrawal oi thedetaohed tubes from the pan and for the inspection of the taste 3 of the pan through the eyeglass fitted in ti door ill of each Plil'hllfllffi.

B the. independent connection of the steam t pipes with the several independors, steam may be shut off from any one radiator in case 0! accident thereto without all'ectiug'the rest, and by admitting steam 4 it! be controlled leasure but the heatiu l 7 g of its contents niay also be fully regulated as required.

I claim in y invention 1.- The combination; with a vacuum-pan, of two 0 more independent segn'iental radiators mounted in the same horizontal plane, each connected separately with steam supply and discharge pipes and each constructed of a pair of separate radial steam-heads or extended boxes, and a series of curved connecting-tubes concentrically disposed and fitted to one side only of each steam-head, substantially in the manner and for the purpose herein set forth.

2. The eonibiii'mtion, with a vacu11m -pan,of a series of segmental radiators,eaeh constructed of a series of soncentrieally-nrranged segmental tubes fitted to a-pair ol radial steamheads,to communicate therewith upon one side thereof only, vertical standards fitted and set :rihed, the i'iniformity of t r on the several tubes and .;he i spaces from obstruc- KOO 4' I v 386,579 j cured centrally within the pan, and sectional segmental brackets bolted to said standards, to

furnish bearings for the inner end of each raf dial head, substantially in the manner and for sets 4 4, formed within the end of each. tube, a bolt, 5, formed with a T-head adapted to en- ,gage saldkoffsets, and a nut. 6, upon the outer the purpose herein set forth. 3. The combination, with the steam-heads A A and the tubes 3 3, coupled thereto, of olfend oft-he, bolt. whereby, when the end-of the bolt is passed through an apertu re in the tubu? lar head opposite the opening to which. the

- end of the tube 3 isto be fitted, the' end of this tube may be draw-n up by thebolt against its seatencircling said opening toform a joint therewith, substantially in the. manner and for the purpose herein set forth.

4. The combination of a tier, \V, of'curved concentric tubes 3 3 3, arranged in two horizontal sections and all connected at their opposlte ends to' single steam heads A'A', an in- .terposed radial bar, 14, inserted between the two sections of tubes, opposite. tie-plates15 15,

set forth.

.5; The combination of-a tier of curved pipes ti-allyin the manner-and embracing twoadjacent tubesin the sections z on each side of the bar,- and a transverse bolt, 16, coupling the two tie-plates, to draw and clamp the tubes upon the radial bar, substantially in'the man ner and for the purpose herein eorrrmnn ENGEL.

' \Vilnesses: Y

HERMA ENGEL,

A, N. JESBERA. 

